/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package controller;

import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import jpa.exceptions.NonexistentEntityException;

/**
 *
 * @author Agus
 */
public class Payment extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException, NonexistentEntityException {
        String page = request.getParameter("page"); //variabel bantu untuk melakukan mapping halaman
        RequestDispatcher dis = null;
        HttpSession session = request.getSession();
        /* pada semua percabangan di bawah ini, akan dilakukan pemanggilan fungsi dari kelas
         * AccountLogic atau langsung redirect ke halaman jsp sesuai dengan parameter dari page
         * yang dituliskan pada address bar web browser dengan kondisi nilai page tidak sama dengan null
         */
        if (page != null) {
            /* memanggil fungsi untuk menambahkan Payments
             */
            if (page.equals("added")) {
                session.removeAttribute("error");
                PaymentLogic pl = new PaymentLogic(request);
                dis = request.getRequestDispatcher(pl.tambahHistoryPayment());
            }/* redirect ke halaman tambahPayment
             */ else if (page.equals("add")) {
                session.removeAttribute("error");
                dis = request.getRequestDispatcher("tambahPayment.jsp");
            }/* memanggil fungsi untuk menambahkan daftar Payment
              * dan menghapus pembayaran
             */ else if (page.equals("list")) {
                session.removeAttribute("error");
                PaymentLogic pl = new PaymentLogic(request);
                dis = request.getRequestDispatcher(pl.hapusHistoryPayment());
            }
        } /* ketika page bernilai null maka akan dipanggil fungsi untuk redirect ke home
         */ else {
            session.removeAttribute("error");
            AccountLogic al = new AccountLogic(request);
            dis = request.getRequestDispatcher(al.home());
        }
        dis.forward(request, response);
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        try {
            processRequest(request, response);
        } catch (NonexistentEntityException ex) {
            Logger.getLogger(Payment.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        try {
            processRequest(request, response);
        } catch (NonexistentEntityException ex) {
            Logger.getLogger(Payment.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
